Hi, I'd like the restriction code so I can use this phone with Cingular. Model: Nokia 3120b IMEI: 356245/00/397027/5 When I insert a Cingular sim card, I get a screen that says "Phone restricted" with a graphic of a stop sign, and then a button option to "Undo". I select "Undo" and I get a screen that says "Enter restriction code" with a box to enter text below. What exactly do I need to type into the box? I've tried a few codes, and each time I get a screen that says "Code error" (again with a stop sign graphic). Thanks, Naomi